What is Quasi-Moon and why is it silently orbiting Earth?
Quasi-moon 2023 FW13 is very small and dark, so it reflects very little sunlight. Its orbit is unusual,…
Scientists thought alien space probe was watching Earth in 1991. It turned out to be…
The first quasi-moon discovered was 1991 VG. The Spacewatch Project spotted the asteroid, which had an Earth-like orbit…